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The Millenia was originally planned as the one of the first models for Mazda's proposed luxury brand Amati. At the time of its release, it was the first and only production car in the world to employ a Miller cycle engine, [3] [4] a design which Mazda would not use again for six more years until the second generation Mazda2.
In engineering, the Miller cycle is a thermodynamic cycle used in a type of internal combustion engine. The Miller cycle was patented by Ralph Miller, an American engineer, U.S. patent 2,817,322 dated Dec 24, 1957. The engine may be two-or four-stroke and may be run on diesel fuel, gases, or dual fuel. [1]
The 1.8 L (1,845 cc) K8 is among the smallest production V6 engines ever; and also the first K-series engine to be used in a Mazda car (in the Mazda MX-3).It was a DOHC 4-valve design with VRIS and a bore and stroke of 75 mm × 69.6 mm (2.95 in × 2.74 in).
V8 engine: LS1 OHV Mazda: 2.3 L: V6 engine: KJ-ZEM DOHC Miller cycle Supercharged: Mazda Millenia: Mercedes-Benz: 3.2 L: V6 engine: M112 E32 SOHC Nissan: 3.0 L: V6 engine: VQ30DE DOHC Toyota: 4.0 L: V8 engine: 1UZ-FE DOHC Volkswagen Group: 1.8 L: Inline-four engine: EA827/EA113 20valve Turbo DOHC Turbocharged: 1997 [citation needed] Audi ...
Miller applied this technique to the four-stroke engine, so it is sometimes referred as the Atkinson/Miller cycle, US patent 2817322 dated Dec 24, 1957. [2] In 1888, Charon filed a French patent and displayed an engine at the Paris Exhibition in 1889. The Charon gas engine (four-stroke) used a similar cycle to Miller, but without a supercharger.
Ralph Miller employed the miller cycle to obtain more power from engines, that were already supercharged, without increasing combustion pressures beyond safe limits. The Mazda KJ Miller Cycle V6 engine uses a supercharger, the Subaru B5-TPH uses a turbo charger while the Miller-cycle engine in the Mazda Demio is naturally aspirated.
Though the Millenia (and its Miller-type V6 engine) were discontinued in 2002, the company introduced a much smaller Miller-cycle four-cylinder engine for use in its Demio in 2008. Mazda3 Further financial difficulties at Mazda during the 1990s ( partly caused by losses related to the 1997 Asian financial crisis [ citation needed ] ) caused ...
Although Mazda is well known for their Wankel "rotary" engines, the company has been manufacturing piston engines since the earliest years of the Toyo Kogyo company. Early on, they produced overhead camshaft, aluminum blocks, and an innovative block containing both the engine and transmission in one unit.